Zip Code: 21231 (Baltimore, Maryland) - Trend of Zillow Observed Rent Index (ZORI) for All Homes Plus Multifamily, Smooth and Seasonally Adjusted (Zillow)
Updated on March 2, 2026.

According to data from Zillow.com, the smoothed and seasonally adjusted Zillow Observed Rent Index (ZORI) for All Homes Plus Multifamily in the 21231 Zip Code (Baltimore, Maryland) in January 2026 was $2,344.125. The month over month percentage change (MoM) was 0.24%, and the year over year percentage change (YoY) was 4.29%.

The chart below shows the trend of the smoothed and seasonally adjusted ZORI for the 21231 zip code (Baltimore, Maryland). The table below shows the trend of the smoothed and seasonally adjusted ZORI, and the MoM and YoY percentage changes for the 21231 zip code (Baltimore, Maryland).

You can see similar information for other Maryland zip codes.

Note: Zillow Observed Rent Index (ZORI) is a smoothed measure of the typical observed market rate rent across a given region. ZORI is a repeat-rent index that is weighted to the rental housing stock to ensure representativeness across the entire market, not just homes currently listed for-rent.

Data Source: Zillow.
Zip Code: 21231 (Baltimore, Maryland) - Trend of Zillow Observed Rent Index (ZORI) for All Homes Plus Multifamily, Smooth and Seasonally Adjusted ($)
Zip Code: 21231 (Baltimore, Maryland) - Trend of Zillow Observed Rent Index (ZORI) for All Homes Plus Multifamily, Smooth and Seasonally Adjusted
Items per page:
1 – 10 of 133
Month ZORI ($) MoM Perc. Change (%) YoY Perc. Change (%)
Jan 2015 0 NaN NaN
Feb 2015 0 NaN NaN
Mar 2015 1619.7525288973218 Infinity NaN
Apr 2015 1597.1179927865712 -1.40 NaN
May 2015 1589.8215317531606 -0.46 NaN
Jun 2015 1587.4561139701611 -0.15 NaN
Jul 2015 1593.6007210397263 0.39 NaN
Aug 2015 1586.873622201309 -0.42 NaN
Sep 2015 1589.3693430286148 0.16 NaN
Oct 2015 1594.0778021130784 0.30 NaN
Nov 2015 1622.2530044307575 1.77 NaN
Dec 2015 1621.1597841689395 -0.07 NaN
Jan 2016 1601.321341923898 -1.22 Infinity
Feb 2016 1580.8069014671266 -1.28 Infinity
Mar 2016 1625.018797978086 2.80 0.33
Apr 2016 1677.443358427689 3.23 5.03
May 2016 1686.4686613789381 0.54 6.08
Jun 2016 1656.7260981947495 -1.76 4.36
Jul 2016 1628.2987546924717 -1.72 2.18
Aug 2016 1631.5081419483888 0.20 2.81
Sep 2016 1611.3482822077037 -1.24 1.38
Oct 2016 1624.6054058025657 0.82 1.92
Nov 2016 1598.850362511312 -1.58 -1.44
Dec 2016 1618.7931837732717 1.25 -0.15
Jan 2017 1660.4804552170483 2.58 3.69
Feb 2017 1700.9783563341073 2.44 7.60
Mar 2017 1696.2873177512322 -0.28 4.39
Apr 2017 1676.6928580875915 -1.15 -0.04
May 2017 1690.7056604741074 0.84 0.25
Jun 2017 1734.547954798936 2.59 4.70
Jul 2017 1755.7081955628803 1.22 7.83
Aug 2017 1752.8870849843443 -0.16 7.44
Sep 2017 1768.6836572018656 0.90 9.76
Oct 2017 1766.2873151501296 -0.13 8.72
Nov 2017 1783.8354174254923 0.99 11.57
Dec 2017 1785.3688347928382 0.09 10.29
Jan 2018 1776.1106188512315 -0.52 6.96
Feb 2018 1772.3884250522838 -0.21 4.20
Mar 2018 1751.8984123249372 -1.16 3.28
Apr 2018 1751.4002183858947 -0.03 4.46
May 2018 1747.4640291734263 -0.22 3.36
Jun 2018 1738.3954981868776 -0.52 0.22
Jul 2018 1745.397068686029 0.40 -0.59
Aug 2018 1746.9219957199778 0.09 -0.34
Sep 2018 1766.96516073616 1.15 -0.10
Oct 2018 1765.441821936392 -0.09 -0.05
Nov 2018 1766.406557123893 0.06 -0.98
Dec 2018 1759.1402413930887 -0.41 -1.47
Jan 2019 1753.0892837019824 -0.34 -1.30
Feb 2019 1748.1964334394986 -0.28 -1.36
Mar 2019 1764.3954629770874 0.93 0.71
Apr 2019 1772.8935200910523 0.48 1.23
May 2019 1776.5931209150738 0.21 1.67
Jun 2019 1777.8504967942272 0.07 2.27
Jul 2019 1778.1077874559328 0.01 1.87
Aug 2019 1788.3875494102704 0.58 2.37
Sep 2019 1780.7178458928556 -0.43 0.78
Oct 2019 1791.7885738490322 0.62 1.49
Nov 2019 1799.8243382972905 0.45 1.89
Dec 2019 1813.8736653723001 0.78 3.11
Jan 2020 1829.1964137411926 0.85 4.34
Feb 2020 1842.6902296967282 0.74 5.41
Mar 2020 1823.2271868359599 -1.06 3.33
Apr 2020 1792.6815424067136 -1.67 1.12
May 2020 1765.9423269981755 -1.49 -0.60
Jun 2020 1753.1991177696386 -0.72 -1.39
Jul 2020 1757.0300441675245 0.22 -1.18
Aug 2020 1737.6222178794778 -1.10 -2.84
Sep 2020 1734.583049380875 -0.17 -2.59
Oct 2020 1730.2003809176895 -0.25 -3.44
Nov 2020 1741.9192256941528 0.68 -3.22
Dec 2020 1756.0232219386278 0.81 -3.19
Jan 2021 1759.785586966044 0.21 -3.79
Feb 2021 1778.6045716712495 1.07 -3.48
Mar 2021 1792.3421724040197 0.77 -1.69
Apr 2021 1839.6971295907683 2.64 2.62
May 2021 1892.122065890111 2.85 7.15
Jun 2021 1924.9027122092473 1.73 9.79
Jul 2021 1949.9230275024593 1.30 10.98
Aug 2021 1977.2543737250671 1.40 13.79
Sep 2021 2004.0941042598233 1.36 15.54
Oct 2021 2020.5822456302976 0.82 16.78
Nov 2021 2044.2332435212697 1.17 17.36
Dec 2021 2070.4176614584435 1.28 17.90
Jan 2022 2093.08867127238 1.10 18.94
Feb 2022 2087.492036062267 -0.27 17.37
Mar 2022 2075.8940811240054 -0.56 15.82
Apr 2022 2076.158374660983 0.01 12.85
May 2022 2074.5396181462584 -0.08 9.64
Jun 2022 2097.9600861735294 1.13 8.99
Jul 2022 2102.031154255711 0.19 7.80
Aug 2022 2117.794242933786 0.75 7.11
Sep 2022 2124.6636998627814 0.32 6.02
Oct 2022 2129.6530556919724 0.24 5.40
Nov 2022 2125.9586750192284 -0.17 4.00
Dec 2022 2119.570743745863 -0.30 2.37
Jan 2023 2121.039529119241 0.07 1.34
Feb 2023 2122.2124892069673 0.06 1.66
Mar 2023 2130.168185330578 0.38 2.61
Apr 2023 2104.3990306294454 -1.21 1.36
May 2023 2111.3602533616236 0.33 1.78
Jun 2023 2118.978016574334 0.36 1.00
Jul 2023 2146.7058705760164 1.31 2.13
Aug 2023 2148.644368234938 0.09 1.46
Sep 2023 2157.420181021096 0.41 1.54
Oct 2023 2153.7749761270657 -0.17 1.13
Nov 2023 2167.1519070828567 0.62 1.94
Dec 2023 2153.7320656277107 -0.62 1.61
Jan 2024 2177.545152266992 1.11 2.66
Feb 2024 2196.123551275236 0.85 3.48
Mar 2024 2218.444214948896 1.02 4.14
Apr 2024 2231.658181276103 0.60 6.05
May 2024 2228.175126073337 -0.16 5.53
Jun 2024 2227.8118918532014 -0.02 5.14
Jul 2024 2219.4854242987126 -0.37 3.39
Aug 2024 2236.8010770975116 0.78 4.10
Sep 2024 2235.4195765696 -0.06 3.62
Oct 2024 2252.3377687962097 0.76 4.58
Nov 2024 2234.837502829008 -0.78 3.12
Dec 2024 2246.2972748417405 0.51 4.30
Jan 2025 2247.665092539253 0.06 3.22
Feb 2025 2247.766642769049 0.01 2.35
Mar 2025 2242.937161872344 -0.21 1.10
Apr 2025 2258.1889916857676 0.68 1.19
May 2025 2270.6821601488955 0.55 1.91
Jun 2025 2276.4978576055896 0.26 2.19
Jul 2025 2283.1968653092504 0.29 2.87
Aug 2025 2280.9595598787378 -0.10 1.97
Sep 2025 2292.209357207551 0.49 2.54
Oct 2025 2296.7202119368203 0.20 1.97
Nov 2025 2321.450328440439 1.08 3.88
Dec 2025 2338.513190705627 0.74 4.11
Jan 2026 2344.125438596491 0.24 4.29